At first, I was too mad to even find this add-on 
But now it works perfectly. Still, I can't really decide whether to use Kodi or just use Raspotify using Raspbian Jessi. I will see how it works in comparison, but until now it looks like they work just the same way.
There is just one question I have: When using a Google Chromecast, I can use it as it was my exact device, just somewhere else. I can also use Crossfade and all the other settings like on just this device I am using as a remote. Would this be possible too? Or at least the Crossfade feature?
Anyway: Great plugin 
